using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.Core.Helpers;
using Tango.Core.IO;
using Tango.Logging;

namespace Tango.Protobuf.Compilers
{
    /// <summary>
    /// Represents a protobuf Java Compiler.
    /// </summary>
    /// <seealso cref="Tango.Protobuf.ProtoCompiler" />
    public class JavaCompiler : ProtoCompiler
    {
        /// <summary>
        /// Gets the compiler language.
        /// </summary>
        public override CompilerLanguage Language => CompilerLanguage.Java;

        /// <summary>
        /// Gets the protobuf compiler CLI arguments (without input/output files!).
        /// </summary>
        /// <returns></returns>
        protected override string GetProtoArguments()
        {
            return "--java_out";
        }

        /// <summary>
        /// Gets a value indicating whether this compiler uses the default folder structure when generating code.
        /// </summary>
        public override bool UsesDefaultStructure => true;

        public override CompilerFolderResult CompileFolder(string sourceFolder, params string[] includeFolders)
        {
            var temp = TemporaryManager.Default.CreateFolder();
            PathHelper.CopyDirectory(sourceFolder, temp.Path, true);

            List<String> directories = Directory.GetDirectories(sourceFolder, "*", SearchOption.AllDirectories).Where(x => includeFolders == null || includeFolders.Length == 0 || includeFolders.Contains(Path.GetFileName(x))).ToList();

            foreach (var dir in Directory.GetDirectories(temp.Path))
            {
                if (!directories.Select(x => Path.GetFileName(x)).Contains(Path.GetFileName(dir)))
                {
                    Directory.Delete(dir, true);
                }
            }

            return base.CompileFolder(temp.Path);
        }
    }
}